Anna Faris wasn’t quite sure how to approach being a mom.

In fact, the Scary Movie star admitted that she had some trouble relating to her fellow parents while raising her and ex-husband Chris Pratt’s 13-year-old son Jack.

“I didn’t always feel like I fit in with the mothers of the parents of his friends,” Faris exclusively shared with E! News at the Aug. 7 premiere of Spa Weekend in Las Vegas. “I always felt like I was kind of messing up somehow. I know I’m doing something wrong here.”

Thankfully, the 49-year-old’s worries have been assuaged thanks to how wonderful her teenager is, especially as he “knows a whole lot more than I thought he did.”

“I am proud that he has a deep sense of justice,” she added, “and I find him just fascinating.”

And while Faris was unsure if she was “fundamentally well suited to be a mom” because she believed she was “an older mom,” she does feel truly honored to be raising Jack.